Tire-core-stripping machine



c. KUENTZEL. TIRE CURE STRIPP ING MACHINE.

APPLICATION FILED JAN. 12, 1922- Rei ss ued Feb.14, 1922,.

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C. KUENTZEL.

TIRE CORE STRIPPING MACHINE. APPLICATION FILED JAN. 12, 1922.

Reissued Feb.14,1922. 15,284.

620% flugngd 4 UNITED STATES PATENT OFFICE.

CURT KUENTZEL, OF AKRON, OHIO, ASSIGINOR TO THE B. F. GOODRICH COMPANY,OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

TIBE-CORE-STRIPPING MACHINE.

Specification of Reissued Letters Patent. I{,eissued Feb 14 1922Original No. 1,395,434, dated November 1, 1921, Serial No. 376,587,filed April 26, 1920. Application for reissue filed January 12,

To all whom it may concern: Be it known that I, CURT KUENTZEL, a citizenof the United States, residing at Akron, in the county. of Summit andState of Ohio, have invented a certain new and usefulTire-Core-Stripping Machine, of which the following is a specification.

This invention relates to machines for stripping soft-bead pneumatictire casings from the cores on which they have been vulcanized. Oneobject is to provide an apparatus whereby the casing may be removed witha minimum of strain and-abrasive action thereon, and a further object isto render the operation completely automatic through one cycle thereofwhen initiated by a simple controlling act, such as the movement of astarting handle to its first operating position. Incidental objectsconsist in the provision of novel instrumentalities and combinations ina machine of this general type as will more fully hereinafter appear.

' ()f the accompanying drawings, Figure 1 is a longitudinal verticalsection of a tire-stripping machine embodying my invention, showing thework in position, those of the stripping fingers and connections in thebackground being omitted in this view for the sakeof clearness.

Fig. "2 is a rear elevation, partly broken awa Fig. 3 is a frontelevation. I Figswl and 5 are horizontal sections on thecorre'spondingly-numbered' lines of Fig. 2. 'Figsfi and 7 are sectionsonthe correspondingly-numbered lines of Fig. 1.

F ig. '8 is across-section of part of a core and tire showing a modifiedform of stripping finger.

' In the drawings, 10 is a frame, and 11 is a shaft mou'ntedto turn inbearings on brackets 12, 13 thereon. 1 1 is an annular ti re core ormandrel of the usual solid type on'which soft-bead clencher tire casingsare formed and cured. 15 IS a tire casing on the core,':the core andcasing being representedin' full lines in F1g.- 1 and in brokenlines'in' Fig. 3. 16,116 are the beads or edge portions of the casing.

on thelfr'o'nt bracket l3is'located a chuck or cord-holder comprisingtwo rigidlymounted, upwardly -pr'fojectmg, d vergent arms 17,'17'with,'pointed ends for engaging the 'groove'd 'inner periphery of thecore,

1922. Serial No. 528,863.

and a third downwardly-projecting arm 18 adapted to be projecteddownwardly against and retracted upwardly from the lower part of saidinner periphery to clamp .and release the core which is supported by thetwo upper arms, said core being thus removably mounted and clamped onthe holder, concentrically with the shaft 11 and the strip ing members,and adapted to be quickly exchanged for a fresh core. The chuck-arm 18comprises a body portion 19 radially slidable in a socket 20 in the hubof the bracket 13 and formed with a short gear rack 21, and a threadedpoint member 22 screwed into said body and'having a check-nut 23,wherebythe point may be adjusted .and fixed on the body. Rack 21 meshes with agear segment 24 on a rock-shaft 25 from which depends an arm 26connected by a telescopic sprin link 27 with an arm 28 on a secondrock-s aft 29, the latter being oscillated by a sliding cam ashereinafter described, to operate the chuck-arm 18; the spring linkfurnishing a yielding connection which prevents breakage under-thepositive action of the cam.

30 is a volute cam fixed to the shaft 11 immediately in back of thebracket 13 and having a semi-circular small portion 31 concentric withsaid shaft. A series of rollers 32, mounted on the ends of levers 33which are fulc'rumed at 34 On the frame, bear on the periphery of thiscam, and are yieldingly held against it by springs 35 attached to thelovers. The forward ends of the levers are forked and formed withlongitudinal slots 36 occupied by the pivot pins 37 of a series oftire-stripping fingers 38. Each pivot pin is extended at both ends toenter a pair of slots 39 formed in brackets 40 between which the finger38 is guided radially as a whole and on which its pivot pinis guided bythe slots 39 in a path which approximately parallels the side contour ofthe core, the slots 36 in the lever permitting the accompanyinglongitudinal movement of the PIILOIL sa1d lever. A leaf spring 11 on thelever 33 holds the extremity of the finger38 in its starting positionagainst the tongue of the core when the lever is depressed, and a pin 42on the hub of the finger, engaging a stop pm 43 on one of the brackets10, prevents the finger from falling forward if no core s present whenthe parts are in this position. The

upper extremity of the stripping finger is termed withaa shert I pointorJpmiectiiin 44 and with a rest or shoulder 45 for engaging the base ofsaid head and pushing-thereon with the avoidance of a substantial degreeof L insertion- 0f the finger between a the tire s naand h core- In Fig;'1 the retracted or starting position of the lever and strippingfingeris shownin full-lines and their fully projected orfinishing position iss'hown in broken lines. To hold'the'seyeral levers and fingers in theirprojected positions when they have been inovedthe'reto bythe cam 30, Iprovide each lever 33' at a point near its fulcrum with a heel priecztionft'ti against thecurved forward side of whioh abutsza blocks?adaptedto slide between snitable guidehars 48 (Figs. 1 and (is) on asleeve t which is mounted to slide axially on the shaft lland isheldfrom rotationby means of a fixed pin 50. The several blocks 47 areprovidedwith pins 51 sliding in holesin a segmental plate 52 affixed tothe sleeve 49 Land are yieldingly projected rearwardlyby springs 53surrounding these pins. \Yhen the heelprojec-tion' tfi on a lever 33rises pjast the h ighest point on a blocker? the latterautomaticallyslides under said heel projection and preventsthe leverfrom returning, the rearward movement of the block being-limited by asegmental stop ,plate 54 afiixedto the rear-end of the sleeve. Thesleeve 49 is proj ected rearwardly by agspring andiatoit's forward endis provided with studs 56 engaged by the forked upper end of a Myer-56fulcrumed on the frame at 57 for drawing the sleeve forward to restorethe several blooksai to their positions in front of the heelprojectionsa6.

For operating these several instrumentalities, I provide on;the bed ofthe frame 10 at the rear of the machine an upright pneumatie cylinder 58containing a piston 59 i-whose rod 60 extends upwardly to a crosshead61,;which slides vertically on a pair of .guiderods 62. 63 is an uppercross-head alsoadapted to slide on said rods and 64, 65 nreapair of barswhich connect these cross heads and upon w'hioh are secured a pair ofvertical gearracks 66, 6'7 lying respectively in backand in front of thetransverse axial plane of;the1piston rod. Loosely mounted onithe shaft11 area pair of gear segments 68, (SQ-.meshingwith the respective racks66, 67 and havingipi'ns 70, 71 on which areipivotedpawls 72, 73yieldingly pressed against the peripheries of a pair of collars74, 75iwhichare keyed to the shaft 11. The collar 744 is formed with a singletooth or projection 76- adaptedt'o be engaged by the pawl 72- and in-thesame position on the collar 75 is formed asimilar tooth or projection 77adapted to be engaged by the pawl 73; the

effect of this arrangement being to rotate the Q r v. .1b,28.4.

shaft 11 through a half turn on the up stroke .ofwtlle piston eas heflGtilQDaOf ;the pawl to catch under theitoexoftthe tire-head .1 65 .7

.72: and through the other half turn on the down stroke of the piston bythe action of the pawl: 1 73...

core chuckltprovide on the outer side of the rack bar 64: a cam bar 78acting on a roller 79 carrie d as'hortarm 80- waist is 'fixe'd'to therear end of the rock shaft 29,

said shaft having another arm 81 connected with a spring 82 for holdingsaid roller.

against the'cam bar.

' lior actuating the sleevettl tor'etract't'he lever-lockingblo'cks 4:7,I provide a pushrod 83 (Figs. land 7) whosejforward' end is pivoted at84 to the lever 56, whilez-itsrear end is supportedjandl g iided on a Tblocli 85 mounted to slide horizontallyfin. a guide 86 on the frame, andon a pin '8'7 on this-push For operating the movable arm 190f the.

rod I pivot a gate "latch j88j which' yields against a spring 89 to anupward thrust e'xerted against a roller 90 at it s'rear end I-but isheld by a pair of stop lugs'91, 92 on said latch and push rodrespectively in rigid ali'nement withzthe push' rod when a down- Wardthrust is exerted against said roller. These upward anddownward thrusts"are exerted respectively by the square upper -face and curved lower faceof a cam 92" which underlies the roller 90 in the lowest position of thepiston 59-,fdi'spl'aces said latch pivotand passes'its rolleron the upstroke of the piston and exerts a resultant horizontal thrustagainsts'aid latch and push rod onthe down strokeof'said piston.

Control of the airdis'tribntion is effected by a four-way valvedevice 93of ordinary construct-ion, whose casing isproVided with a compressed,air supply pipe '94, anexhaust branch 95 opposite thereto, a pipe 96leading to the lower end of the air cylinder 58- and an opposite pipe 97leading to=-the upper end of said cylinder. On the stem of the valveplug is, mounteda gear segment 98 having an oscillation angle of 90 andmeshing with another gear segment 99 on. a rock shaft 100 to which isa'flixed a controlling handle 101 operating over a sector 102.Inthemiddle position of this handle the valve'is in its neutral positionand blanks all the ports. In the upper position of the handle,compressed air is supplied from the pipe 9a through the pipe-96 tothe'lower end of the air cylinder, while the upper end thereof isexhausted through the pipe 97 and. the outlet branch 95. In ,theilo werposition dfthe handle, compressed air is supplied firom' pipe 94 throughthe pipe 97;to. the upper end of the air cylinder and the lower endthereof is exhausted through pipe 96 and the branch lower end of itsstroke respectively, lug 104 serving to turn the controlling valve froma position in which it has been charging the lower end and exhaustingthe upper end of the cylinder to the reverse position which charges theupper end and exhausts the lower end, while the lug 105 restores thevalve to its neutral position.

At the beginning of a cycle of operations the parts have the positionsshown in Figs. 1 and 2. A core 14 having a vulcanized tire casing 15thereon is placed on the rigid upper chuck arms 17 and the airvalvecontrolling handle 101 is thrown to its upper position on the sector102. Compressed air is thereby admitted to the lower end of the aircylinder 58 while its upper end is opened to the exhaust, the trip lug103 being at the same time turned downwardly away from the lug 105. Theinitial upward movement of piston 59 causes the cam bar 78 to displacethe roller 7 9. thereby turning theroc-k shaft 29 which oscillates therock shaft through'arms 28 and 26 and the connecting link 27, depressingthe movable chuck arm I 18 against the inner periphery of the tire coreso as firmly to clamp said core in place. The action of first closingthe chuck without operating the stripper fingers may be allowedforeither on the profile of the cam 30 or by a lost motion between thepawls 72, 73 and their lugs 76, 77. While the chuck is being closed therollers 32 are on the small concentric portion of cam 30. Further upwardmovement of thepiston 59 causes the cam shaft 1]. to'be. turned throughan angle of 180 by the action of the rack 66, pinion segment 68,pawl-T72 and lug 76.. The pawl 7 3 is at the same time by means of therack 67 and pinion segment 69. turned clock-wise as viewed. in .Fig 2until it drops in back of the lug 77 (now at the right of the shaftaxis)..- As the piston nears the end of its up stroke the lug lO-itencounters lug 103 and reverses theposition ofxthe ,air valve, thusexhausting the, lower end of the cylinder 58 and admitting compressedair above the piston, The piston. then descends and the pawl .73 turnsthe camshaft ;11 through another 180 of travel during the down stroke ofthe piston. As said down stroke is completed, the actionof lug105'aga1nst the lug 103 restores the, control valve to its neutral portblanking position. Thusthe action of the machine is made completelyautomatic after-its initiation by turning the handle 101 to its-upperposition. In mak ng one com plete revolution in the manner described,the volute, portion of cam 30 acting upon the rollers 32 successivelymoves the, several levers 33 and stripper fingers 38 from the r fullline positions to their bTOk8I1l1118-P0S1 tions indicated in Fl. 1 andthe locking blocks 47 successively slipping under-the heel 276.5projections 46 onv said ilevers serve to retain the latter in theirprojected positions after the point of the cam has passed beyond theirrollers 32; The outward radial movement of the stripper fingers 38causes their extremities to travel along the inner side face and over onthe tread or crown of the core 14 on the upper half or semi-circle ofits circumference and the shape of the ends of said fingers causes themto push against the base of the inner bead 16 of the tire casing andforce it over the crown of the core without substantially lifting saidbead away from the core as indicated by the broken line position of theupper part of said casing in Fig. 1, while the lower part of the casingremains in position on the core. At the completion of this operation thetire is sufficiently free of the core to be pulled off the remainingdistance with small efi'ort or to drop off by gravity. In the latterpart of the down stroke of the piston the curved-under side of lug 92'displaces the latch 88 and push rod 83 to the right as viewed in Fig. 1,thus movin the sleeve 19 forward on the shaft 11 anc causing its plate54 to restore the locking blocks 47 simultaneously to their positions infront of the heel projections 46, thus permitting the springs .35 torestore the levers 33 and stripper fingers 38 to their startingpositions. As the piston completes its down stroke, the cam bar 7 8withdraws from under the roller 79 and allows spring 82- to retract thechuck arm 18, thereby unclamping the tire core. It will be seen that notonly is the action of the machine made completely automatic through onecycle of operations after movement of the controlling lever 101 toitsupper position but also the construction and arrangement of thestripping tools and their operating devices 1s such that there is nosliding or abrasive action whatever of the tools upon the tire eithercircumferentially or transversely on the inner surface thereof and thebead is stretched the minimum'amount necessary to let the core out ofthe casing, in which respects my invention improves upon the .action ofprior devices for stripping tires from their cores. 1

Fig. 8shows a modified form of stripping finger 38which, when used withsuitably arranged operating devices of the general nature abovedescrlbed, can be made to operate between the inside of the tire casingand the surface of the core for the-purpose of lifting the head at aplurality of points on one side away from and over the tread of thecore, but this modified construction and mode of operation isconsidered. less desirable-than what-has been previously described,because of the fact that the; bead is more stretched, the finger has tomove .a greater distance over the tread of the core in order to getthe-tire off andthe transverse sliding contact between the finger andthe inner surface 'otthe-tire is more" afit to produce injury tothelatter than Where the bead-is merely pushed over as indicated in Fig. 1.

I claim: I

1. In amaehine for st ippin tire easings from-cores', the combination ofc'ore supporting means, and a semi-circular se'ri'es'of tirestrippingmembers "havinga substantially fixed relation to the coreei'rcumferentially thereofand adapted too-act radially-thereof toforcean edge of the tire casing over the core-on one pil rt'of th'e'tire circumference while the opposite part remains substantiallyfixed-'on'the core untilthe'firsts'aid part is clear.

2. In a. machine'forstripping'tire casings from cores, the combinationof 'core s'up ofting means,* a series (itceie-s'trip'ping' fingersadapted'to act radially outward on the sine and laterally over the treadportion of ti-1ecore and grouped in-a circumferentiallyfixedrelation't'osaid core over substantially half only of its circumference, and'a'noperating means common to said group of fingers. 3.- In a 'machine fo'rstripping the casings from cores, the combination of a core'holder, atire core removably' supported thereon, a group of radially actin'gtire=stripping fingers-mounted in circumferentially-fixed relationthereto, and means for successively projecting said fingers and soholding them in order progressively to force an edge (if the-tire casingover thecore;

4. In a machine for stripping tire casing-s from cores, the combinationof a fixedcore holder, a' 'group of circuniferentia-ly-fixedtire-stripping "members distributed over substantially half of thecorecircumference, and operating meansnomm'on to said me'm hers adaptedsuccessively to project them andhold them projected.

5; jI n a machine for strippin g -tire easings from c0res,-'thecombinationo'f a-eore holder, and means acting on -the bead only of*thetire casing, over substantially one-half part only of its circumference,'for pushing said part of the bead out on the side and over the tread ofits portion "of the core while the opposite part'of the casing remainsin osition on the core until the part which is icing pushed over isclear.

6; In a machine for stripping tire casings from cores, the combinationof a core holder, a tire core thereon, and stripping devices positionedat a plurality of points in fixed relation to itscircumferencaand adated-#120 act against the base of the tire beadwhil'e said head issubstantially held against the side of the core duringits outwardtraverse thereon, for pushing said bead outwardly and over the tread ofthe core.

-7. In a machine for stripping tire casings from coma-the combinationofa core holder,

atir e stripping-machine haviii'g a relatively short rojectien forinsertion under un -toe of a tire "head-and an adjacent shoulder 'forengaging ='-*the base ot the head; and means a tire-core mountedthereoma tire'stripping finger adapted to act'against 1 the base of thetire bead to push saidhead eutwafidly an the side and over the dead cfthe tore, and meansfor {guiding a point on saidffing'er' remote from itsacting end in a *path substantially parallel with the side contour ofthe core.

10. In a machine for strippin tire easings from-cores, the combinationof acor'e holder, a finger actuator, a tire stripping-- finger-pi=veta1ly eonnec t'e'd *with said actu ator, and means for guiding thepivot of saidfin ger in a path substantiallyrepmflueing the'sideprofile-of a tire core having the shape of the inside of thefinished-tire;

'11-; In a machine for strip in mire e asings from cores, the'comhination of a'c'o'i'e holder,- a finger 'aetuatingleverfHlC-ILliil'e'dlfl the rear of" said holder, a-ti're stripping-fin gerpivotally connected withjsaid lev'(in and a fixedly mounted guide forthe pivotof said finger.

12. In a machine for stripping "tire easings from cores, the'combinatien' of a "core helder, a finger actuatinglev'er fnltii'uliiedin the Tear thereof, a tire stripping finger pivotally andslidingly connected Wltll said lever, and means for .giiidingthe pivotalpointof said finger in a path substantially imitating the sidecon'tourof anorm'al -tir'e core.

13. In a machine for stripping tire casa tire stripping finger mountedto travel between said members and having pivot studs occupying saidslots, and a finger actuating lever fulcrumed in the rear of said holderand having a slotted forward end p-ivotally and slidingly engaging saidstuds. 15. In a machine for stripping tire casings from cores, thecombination. of a core holder, a tire core mounted thereon, fingeractuating lever fulcrumed in .the rear of said holder,and a tirestripping finger pivotally connected with said lever and having itsouter end guided on the core, said finger having a substantially.right-angled relation to the lever when the latter is retracted andasubstantially alined relation thereto when the lever is projected. 1

16. In a machine for stripping tire casings from cores, the combinationof a core holder, a finger actuatinglever fulcrumed in the rear of saidholder, a tire stripping finger pivotally connected with the forwardendqof said lever and adapted to have its operating end supported by thecore when moving outwardly thereon, and. means .to prevent saidfingerfrom falling forward in its retracted; position when no core is present.r 1 17. ,In a' machine for stripping tire casfrom cores, the combinationofa core. ho der, a finger actuating levertpivotally connectedtherewith,a; springv foryieldingly turning said finger ,on thelevertoward the core, a ide for-said finger, and-1a stop-on Said guideto ,limit. the forward pivotal movement of the retracted-finger when nocore'is present, i i i p 18. In .a machine for stripping tire casin sfront-wreaths combination ofacore hoIder, aseries of tire strippingmembers mountedin fixedyangular relation thereto, and a cam forsuccessively projecting said 5 a. Y i In a mechine for. tire cas- 4.fromcores, thecombina ionof a core .hoder, a .se1 'ies ,Oftirestrippingfingers, a Series of lever'spivotally. connected with said fingers, anda cam acting onfsaidlevers for successively swinging them into fingerpro- ,,20 11 a;machine for stripping tire casin e the .combinationfof acore he (let,- aIs emi-cii'cular seriesof; tire, stripping fingersmounted in fixed angular relation to said core, a cam shaft, andacam onsaid shaft havingfan approximatelysemi} circular portionfconcentric.witheaid shaft and avolute ortion adapted successively to project saidngers in one revolution of the cam.

'Qll In {machine for stripping tire cas in ,from cores, the combinationof a core ho der, a semi-circular series of finger actuating leversfulcrumed in the rear thereof, a It series of core stripping fingerspivot-ally connected with said levers, and a cam acting on said leversand adapted in one revolution to swing said levers successively intofinger projecting position.

22. In a machine for strip-ping tire casings from cores, the combinationof a core holder, a tire stripping finger, a finger actuator, a cam foroperating said actuator, an automatically locking device to hold said actua-tor in its finger projecting position, and means for retracting saidlocking device.-

23. In a machine for stripping tire casings from cores, the combinationof a core holder, a series of tire strip-pin g fingers mounted in fixedangular relation thereto, a series of finger actuating levers, a seriesof lever locking devices yieldingly actuated in a direction to hold saidleversin their finger projecting positions, a cam adapted successivelytoswing said levers into said positions, andmeans forsimultaneouslyretracting said locking devices.

, 24. In a machine for stripping tire casings from cores, thecombination of a core holder, a cam shaft substantially concentricthere? with, a cam on said shaft, a series of. finger actuating leverssemi-circularly grouped about said shaft and adapted to be successivelyprojected by the cam, tirestri pping fingers operated by said. levers, asleeve axiallyslidable on said shaft, a series of leverdockingmemberson. said sleeve having springs urging them axially thereon. intolever-locking position, and means for sliding said sleeve along theshaft to simultaneously retract said devices.

l .25. Ina machine for stripping tire casings from. cores, thecombination of a core holder,

a series of tire stripping members mounted infixed relation theretocircumferentially of the core, a. cam adapted in one, revolutionsuccessively to project said members, and a reciprocating fluid actuateddevice adapted in one out stroke and one in .stro-keto impart onerevolution to said can'i,

26. In a machinefor strippingtire casings from cores, the combination ofacore-holding chuck, a tire stripping member-and means for actuatingsaid tire stripping memher, and means actuated by the aforesaid meansfor automatically actuating said chuck in predetermined relation to theact on of-said't restripping member. I

f 27. In a mach ne for stripping tire casings rampa s, the combinationof a core-holdin ec fir Stripping mem e fie P essure cylinder an p t nir qqarections ,whereby the movement of said piston firstoperates saidchuckto thefcioreand then '0 saidQtire stripp ng member.

. 28. a machine'for stripping the casings from cores, the combination ofa core holdting chuck, a series of tire stripping fingers, a cam adaptedsuccessively ro ect said fingers, a. fluid pressure cylm er and piston,130

and connections whereby said "piston on its out-stroke and instroketurns the cam through one revolution and a't the-beginning of itsoutstroke operates-said chuck foo-grip the core.

29. In a machine for stripping-tire casings from cores, the combinationofa 'oore-hold'- ing chuck, aseries of tire stripping-members, means foroperating said chuckto grip-the tire and for operating said tirestripping members to project and retractthesame, a controlling devicefor settingsaid operating means in action, and aconnetioh-hetweeh saidoperating'means and controlling device whereby the machine automaticallycom pletes one cycle of I ope-rat on andthenstops when the con trollingdevice hash'een setfi'n its initial starting position. 30. In a machinefor stripping; tire casings from cores, the combination of a coreholder, a Series of tire stripping menihers, ;operating means forprojecting and] retracting said members, a controller for said operatingmeans, and a connection between said operating means and controlleriv-herebj th'efi re stripping members are caused automatically tocomplete and stop at the end of one cycle of operation when thecontroller is'set in its starting position.

31. In a machine for s'tripping'tire casiii'gs from cores, the.combinatioh of a core holder, a series of tire strippingfmemhers,"meansadapted successively to project-simmers hers, locking means'forholdingthem projected, lock retracting means, means comriion to thetirestripping memhefs, the lhcking means and thelo'ck retractiiig means foroperating the same, a controller for said operating means, andconnections between said controller and operating'means whereby themachine completes one cycle of operations and thenstopswhe'n thecontroller is set in its starting position. v 32. In a machine forstripping tire'ca-s ings fromcores, the combination'of'acore holder,tire stripping devices,.,a fluid pressure cylinder and piston foroperating said devioes, and a controlling. valve for 5b cylinderactuated by'the traverse of the Pist 33. In a ,machine for'strippingtire asing's from cores,- the combination of a core holding chuck, aseries offtire stripping members, a cloiihle acting fi'n'id pressurefilind a pi on. i ept d to pe at Said mee to g p he i re end. en p ojectand retrac sai -m mber a valve for' i tr ling he admissi n a ex iaiist oliet ends of d, cyliiifier epd a apted ,be' manua y plaeedii sfietingiws mntand valve trip ping means actuatedby-the traverse ofthe.piston" for. reversing said valve at the end of the out-stroke of thepistonand: moving it to neutral-position at the .end'oitheim stroke. I

34;. In a machine for strippingtire casings from cores, thecombination-eta core holder, a series of tire stripping members, aadapted successively to project: saidf-me'm hers, a cam shaft,aflnicl-pressure cylinder and piston, and a pair-of altennatelyaetingrack andpin-ion devices and 'associatedpne way clutches for impartingone revolution to said camshaft duringan= out-stroke 1 and anin-stroke'of the pistom i 35. In a machiiieio'r stripping tire easi mg'sfrom cores, the combination-eta eore'helde'r, a series of tirestripybinganembers; a cam for successively projecting said me1i1berslocking devices for"ho1dii1gthem-projeeted a retractorfifor said lookingdevices, retract ing connect-ions incl'I'iding-a push -r'od and acne-waylatch" thereon, fluid pressure cylinder and piston having-connectionstorimparting one revoliitiontmSar'id cam dur ing an out-stroke and'ajminsfiroke -of'the piston, and cammeans connected with said piston andadapted on the out-stroke thereof to displace seid'latch 'andon theiii-stroke to operatethe push rod'andthe-rhy retreot the lockingdevices.

36, If! a'machi'ne for strip'jgiviillg t1"'1-'e1 eas-= ings from cores,the combinatiorr ofa core holding chuck, shaft concentrie'tlherewitliand havinga cam, a' series of tire- 's'tr ippiiig members adapted to besaccessivflyprfiected in one revolution of said ,camfa-" lockiretracting sleeve movable afi'gial ly'of sai'cl shaft and havinga seriesoflofiiliiirgiievicesfidagit ed to'hold s ai cl me'rnbers projected, acl ouhle acting fluid pressu-ne'cylinder, andpiston, connections fromsaid "piston" to the t for turningthe latter through enema), 1 tion on.an oht stroke andfail'iri strolepfi piston, means connected with saidpistol: actuating said chock to gripthe core an the ont-strolie of thepiston and" foi actnatijfig said retracting sleeve fon' thel' in-strolie thereof, a valve controlling admission? exhaust of both ends of saideylirider adapted to he manli'ajlly placed it" 1 g position, and valve,tri'ppinfg device nected" with said. piston. for; reversin valve at theendjo f the oi t-stroke' o pi to and or. re to g i??? P m B l P33 tion'at the end'ofthe in-stroke;

In. Witness he e I have i refi t

